Bookworm - Fix Cart Overlapping Offcanvas Menu Issue

functions.php

if ( ! function_exists( 'bookworm_cart_link_fragment' ) ) {
    function bookworm_cart_link_fragment( $fragments ) {
        global $woocommerce;

        ob_start();
        bookworm_cart_page_header();
        $fragments['.page__header--cart'] = ob_get_clean();

        ob_start();
        bookworm_cart_link_count();
        $fragments['span.cart-contents-count'] = ob_get_clean();

        ob_start();
        bookworm_wc_offcanvas_mini_cart_content();
        $fragments['#offcanvasCart div.u-sidebar__body'] = ob_get_clean();

        $fragments['span.cart-contents-total'] = bookworm_cart_link_total_text();

        return $fragments;
    }
}